Friction draft-rigging



2 SHEETS-SHEET I.

Patented Dec. 7, 1920.

J. F. ocormom FRICTION DRAFT RIGGING.

APPLICATION FILED FEB. 16, 1920. 1,361,485.

J. F. OCONNOR.

FRICTION DRAFT RIGGING.

APPLICATION FILED m1. 1.6, 1920.

Patented Dec. 7,1920.

2 SHEEII'S-SHEET 2.

I w 0 I v UNITED STATES- PATENT OFFICE.

JOHN F. OCONNOR, or CHICAGO, ILLINOIS, ASSIGNOR T0 WILLIAM H. MINER.

or CHAZY, NEW YORK. I

. FRICTION DRAFT-RIGGING.

cago, in the county of Cook and State of Illinois, have invented acertain new and useful Improvement in Friction Draft- Riggings, of whichthe following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

This invention relates to improvements in friction draft riggings.

The object of the invention is to provide 5 a high capacity combinedspring and friction draft rigging and one wherein the springs arelocated outside of the sills so that the usual space allotted within thesills may be utilized for the friction elements.

In the drawings forming a part of this specification, Figure 1 is atopplan view of a portion of a railway draft rigging showing myimprovements in connection there with. Fig. 2 is a longitudinal verticalsectional view taken substantially on the line 22 of Fig. 1. Fig. 3 is avertical transverse sectional view taken substantially on the line 33 ofFig. 1. And Fig. 4 is a detail perspective of one of the friction ending springs E-E on the outer sides of the sills;- outer spring followersFF; inner followers G-G; upper and lower sets of plates H and I; andfront and rear upper and lower sets of fixed plates or stops J J.

The friction end Wedges A and B are of similar form and each is providedwith a' pair of diverging friction wedge faces 1313 and with anelongated recess 14. to

Specification of Letters Patent. Patented Dec. 7, Application filedFebruary is. 1920. Seria1lNo. 358,990.

accommodate a key D. I The latter are mounted in slots provided inthewebs of the draft sills in such a way that the keys D are preventedfrom longitudinal movement. The keys D are held against accidentallateral displacement by any suitable means such as the cotters 15. Thearrangement of wedges A and B and keys D is such that the front wedge Amay move inwardly from normal position but not outwardly with respect tothe front key D and the rear wedge B may move forwardly from normalposition but not rearwardly, with respect to the rear key D. g Y

The laterally movable friction shoes G are in the form of cast blockseach having oppositely beveled end friction faces 16-16 adapted tocooperate with the faces of the wedges A and B. I On their outer sides,each shoe C is provided also with a longitudinally extending flatfriction surface 17 the latter cooperating with the inner faces of thefollowers G. k

Each of the followers G is preferably in the form of a relatively shortsection of channel and the same is .also true of the spring followersFF. Each follower G is connected with the follower F more remotetherefrom by means of either the plates or the plates I. The plates Iare two in number and are comparatively wide, the same straddling thedraft sills 10 and riveted at their ends to the flan es of the followersF and G. Theplates are four in number arranged in upper and lower pairsand also in front and rear sets, the

plates H being riveted to the flanges of the corresponding followers Fand G. As will be apparent from an inspection of Fig. 2,

the plates 1 are slidingly mounted between the plates H or telescoped'with respect thereto. Theplates H are in turn slidingly mounted betweenthe fixed plates'J which are riveted to the draft sills. With thisconstructiomit is evident that the followers F and G and the plates Hand I are restricted to movement at right angles'to or transversely ofthe draft sills.

The springs E are preferably four in numher, two on each side of thedraft sills.

' Gso that the latter are separated,- thereby the rear wedge B remainingstationary on the rearkey ;D. As the. front wedge ,A moves rearwardly,the friction shoes .CC are spread laterally andlon'gitudinal movementwill also be imparted thereto asthe .sameslideover-the rear wedge B.vFriction will thus be generated between the wed es A and B. on theonehand and the. frlction shoes. on the other hand. At the same time,frictionwill be generated betweenthe outer fiatsurfaces of the shoes. Cand the followers G. I The lateral movement imparted to the shoesC will,betransmitted to the followers forcing the spring followers F- F to: be

.pulled inwardly toward each other, the com-' 30 pressing forcebeingapplied to the springs at the outer ends. of thelatter ina directiontoward thedraft sills. The plates H and I are held against longitudinalmovement by the fixed'plates J as will be understood.

7 With my improved construction, I amenabledto utilizeall the spaceallotted between the draft sills for the frictionlelements and thespringsflre. located in spaces not now generally occupied, Thefrictionelements may. be alLfOr'med. as. castings and theremainingparts of thesho k absorbing mechanism proper, with .the exceptionof the keys, maybemade from plates and channels ordinarily carried in stock.

.I claim; V

1. .In a railwa frictiondraft rigging, the combination wit draft sills;of friction deviceslocated between the sills and including,longitudinally and laterally movable elements; springsdisposedoutsideof the sills; and. means,. restricted to movementtransversely ofthe. sills, for transferring the movementofisaidlaterally movable friction elementsto theouter ends of saidsprings to thereby compress the latter by rected inwardly toward thesills.

forces di- 2. In a, railway friction draft rigging, the

combination with draft sills; of friction de- .vices located between thesills and including longitudinally and laterally movable .ele-

ments; springs disposed outside of the sills; and means, restricted .to.movement .transversely of the. sills, for transferring the movement ofsaid laterally movable friction elements to the onter ends of saidsprings to thereby compress the latter by forces directed inwardlytoward the sills, said means including upper and lower sets of platesslidingly telescoped andextending from between the sills to pointsoutside thereof.

. 3. .In a'railway friction draft rigging, the :combination with draftsills; of laterally eX- tending springs located outside of the sills andheld against movement lengthwise of the sills; frlction devices locatedwithin the sins; spring followers at the outer ends of thesprings;,oppositely and laterally movable means interposed between saidfollowers and the friction. devices whereby action ofthe latter iscommunicated to the-springs and means preventing longitudinal movementofisaid laterally movable'means.

4, In a railway friction draft rigging, the.

combination'with draft sills; of friction. devices including laterallym'o vable elements located between the sills; laterally, extendingsprings disposed outside of the; sills; and means for compressing saidspringsupon actuation. of the-friction devices including loops, eachloop encirclingthe laterally movable friction elements, sill, andaspring.

-52. Inarailway friction draft rigging, the

combination with-draft sills; of laterally ar ranged. springs disposedon the outer sides ofthe sills; spring followers disposed, at theouterends of said springs; friction devices located between the" sills;followers disposed on opposite sides of the frictiondevices and locatedbetween the sills; and telescoping sets of upper ,andlowerplates,-each}set connecting one ofsaidfollowers between the sills withthe moreremote spring follower outside offlthe sills.

6. Inarailwayfriction draft rigging, the

combination withdraft sills; of laterally arranged springs disposed onthe outer-sides of the sills; spring followers disposedat the outerends-,of said springs; friction devices located between the sillsfollowers disposed on opposite sides of the frictiondevices and located;between the sills; telescoping sets of upper and lower plates, each setconnecting,

one of,said followers between thesills with the more. remote springfollower outside ofv the sills, said plates straddling the sills; and

prevent longitudinal movement thereof.

7. In a railway friction draft rigging, the combination. with draft.sills, a drawbar, and yoke-acting means vof friction devicesdisposed,bet ween the sills and including front and rear relativelylongitudinally movable wedges and laterally movable friction elements;stop-acting :means cooperable with said friction devices; laterallyarranged springs onthev outerssides of the sills; spring followersat theouterends of the springs; a

follower located between each of said later- 115 fixedmeans cooperating.with the plates to ally movable friction elements and the correspondingadjacent sill; upper and lower plates connecting each said followerdisposed between the $1118 with the spring follower outside of the sillmore remote therefrom, said plates being slidingly telescoped withrespect to each other; and front and rear upper and lower sets of platesrigidly secured to the sills and between which said first named platesare slidingly guided. 10 In witness that I claim the foregoing I havehereunto subscribed my name this 7th day of Feb, 1920.

. JOHN F. OCONNOR. Witness: CARRIE GAILING.

